Infiniti Q45. Manual - part 306

LANE DEPARTURE WARNING SYSTEM

DI-91

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SYMPTOM CHART

Power Supply and Ground Circuit Inspection

NKS002C2

1. 

CHECK FUSE

Check for blown LDW camera unit fuse.

OK or NG

OK

>> GO TO 2.

NG

>> Be sure to eliminate cause of malfunction before installing new fuse. Refer to 

PG-2, "POWER

SUPPLY ROUTING"

 .

2. 

CHECK POWER SUPPLY CIRCUIT

Check voltage between LDW camera unit and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair harness between LDW camera unit and fuse.

Symptom

Diagnosis/Service procedure

LDW system is not activated.
(LDW system ON indicator turns ON/OFF.)

Perform the following inspections.

1.

DI-93, "LDW Chime Circuit Inspection"

2.

DI-97, "LDW Indicator Lamp Circuit Inspection"

Replace LDW camera unit, found normal function in the above inspections. 

LDW system does not turn ON/OFF.
(LDW system ON indicator does not turn ON/OFF.)

Perform 

DI-94, "LDW Switch Circuit Inspection"

 .

Replace LDW camera unit, found normal function in the above inspection. 

Warning functions are untimely.

(Example)

●

Warning does not function when driving on lane mark-
ers.

●

Warning functions when driving in a lane.

●

Differs position from actual condition functions.

Perform 

DI-74, "Camera Aiming Adjustment"

 .

Functions when changing the course to the turn signal 
direction.

Perform 

DI-98, "Turn Signal Input Inspection"

 .

Replace LDW camera unit, found normal function in the above inspection. 

LDW indicator lamp does not illuminate with ignition 
switch ON.

Perform 

DI-97, "LDW Indicator Lamp Circuit Inspection"

 .

Replace LDW camera unit, found normal function in the above inspection. 

Unit

Power source

Fuse No.

LDW camera unit

Ignition switch ON or START 

1

Terminals

Ignition switch position

(+)

(–)

OFF

ON

LDW camera 

unit connector

Terminal

R26

1

Ground

0 V

Battery voltage

PKIC0246E

DI-92

LANE DEPARTURE WARNING SYSTEM

3. 

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect LDW camera unit connector.

3.

Check continuity between LDW camera unit harness connector
and ground.

OK or NG

OK

>> Power supply and ground circuit are OK.

NG

>> Repair ground harness.

DTC [C1B00] CAMERA UNIT MALF

NKS002C3

1. 

CHECK LDW CAMERA UNIT

1.

Perform self-diagnosis of LDW camera unit.

2.

Check if any item other than “[C1B00] CAMERA UNIT” is displayed on self-diagnosis display.

Is any displayed?

YES

>> Repair or replace applicable item.

NO

>> Replace LDW camera unit.

DTC [C1B01] CAM AIMING INCMP

NKS002C4

1. 

PREFORM CAMERA AIMING ADJUSTMENT

1.

Preform camera aiming adjustment. Refer to 

DI-74, "Camera Aiming Adjustment"

 .

2.

Erase DTC and perform LDW camera unit self-diagnosis.

Self-diagnostic results content

No malfunction detected>>INSPECTION END
Malfunction detected>>Replace LDW camera unit.

DTC [C1B02] VHCL SPD DATA MALF

NKS002C5

1. 

CHECK VDC/TCS/ABS CONTROL UNIT (CONSULT-II)

Perform VDC/TCS/ABS control unit self-diagnosis. Refer to 

BRC-23, "CONSULT-II Functions (VDC)"

 .

Self-diagnostic results content

No malfunction detected>>GO TO 2.
Malfunction detected>>Check applicable parts, and repair or replace corresponding parts.

2. 

CHECK TCM (CONSULT-II)

Perform TCM self-diagnosis. Refer to 

AT-85, "CONSULT-II Function (A/T)"

 .

Self-diagnostic results content

No malfunction detected>>Replace LDW camera unit.
Malfunction detected>>Check applicable parts, and repair or replace corresponding parts.

DTC [C1B03] ABNRML TEMP DETECT

NKS002C6

1. 

COOLING CAMERA UNIT

1.

Cooling camera unit.

2.

Erase DTC and perform LDW camera unit self-diagnosis.

Self-diagnostic results content

No malfunction detected>>INSPECTION END
Malfunction detected>>Replace LDW camera unit.

LDW camera 

unit connector

Terminal

Ground

Continuity

R26

6

Yes

12

PKIC0247E

LANE DEPARTURE WARNING SYSTEM

DI-93

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DTC [U1000] CAN COMM CIRCUIT

NKS002C7

1. 

CHECK CAN COMMUNICATION   

1.

Select “SELF-DIAG RESULTS” mode for “LDW” with CONSULT-II.

2.

Print out CONSULT-II screen.

>> Go to “LAN SYSTEM”. Refer to 

LAN-17, "Precautions When Using CONSULT-II"

 .

DTC [U1010] CONTROL UNIT (CAN)

NKS002C8

Replace LDW camera unit, when “[U1010] CONTROL UNIT (CAN)” is displayed on self-diagnosis display.

LDW Chime Circuit Inspection

NKS002C9

1. 

CHECK OPERATION OF LDW CHIME

Check LDW chime operation “BUZZER DRIVE” in “ACTIVE TEST”
mode with CONSULT-II.

OK or NG

OK

>> LDW chime is OK. Return to 

DI-91, "SYMPTOM

CHART"

 .

NG

>> GO TO 2.

2. 

CHECK LDW CHIME POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect LDW chime connector.

3.

Turn ignition switch ON.

4.

Check voltage between LDW chime harness connector and
ground.

OK or NG

OK

>> GO TO 3.

NG

>> Check harness between fuse and LDW chime.

3. 

 CHECK LDW CHIME GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between LDW chime harness connector and
ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair harness or connector.

“BUZZER DRIVE”

Touch “ON”

: LDW chime is activated.

Touch “OFF”

: LDW chime is not activated.

SKIB1787E

Terminals

Voltage 

(Approx.)

(+)

(–)

LDW chime connector

Terminal

M223

1

Ground

Battery voltage

PKIC0248E

LDW chime connector

Terminal

Ground

Continuity

M223

3

Yes

PKIC0249E

DI-94

LANE DEPARTURE WARNING SYSTEM

4. 

CHECK LDW CHIME SIGNAL CIRCUIT

1.

Disconnect LDW camera unit connector.

2.

Check continuity between LDW camera unit harness connector
(A) and LDW chime harness connector (B).

3.

Check continuity between LDW camera unit harness connector
(A) and ground.

OK or NG

OK

>> GO TO 5.

NG

>> Repair harness or connector.

5. 

CHECK LDW CHIME

1.

Connect LDW chime connector.

2.

Turn ignition switch ON.

3.

Apply ground to LDW chime terminal.

4.

Check condition of the LDW chime.

OK or NG

OK

>> Replace LDW camera unit.

NG

>> Replace LDW chime.

LDW Switch Circuit Inspection

NKS002CA

1. 

CHECK OPERATION OF LDW SYSTEM ON INDICATOR

1.

Turn ignition switch ON.

2.

Check LDW system ON indicator operation when LDW switch is ON/OFF.

OK or NG

OK

>> LDW system ON indicator is OK. Return to 

DI-91, "SYMPTOM CHART"

 .

NG

>> GO TO 2.

A

B

Continuity

Connector

Terminal

Connector

Terminal

R26

3  

M223

2  Yes

A

Ground

Continuity

Connector

Terminal

R26

3

No

PKIC0250E

LDW chime connector

Terminal

Ground

Condition

M223

2

LDW chime should 

operate.

PKIC0251E